The document summarizes key events that occurred during different periods of Earth's history from the Precambrian era to the present day Quaternary period. It notes that the earliest sedimentary rocks formed over 3.8 billion years ago and the earliest life was microscopic bacteria. During later periods, the first vertebrates came out of the water onto land around 360 million years ago and the first wingless bugs evolved. By around 250 million years ago, the supercontinent Pangea had formed from the collision of other landmasses but later began to break apart. The document provides links to additional resources about each major period in Earth's development.

1. By. Lorelei Ing

2.  The first sedimentary rocks were formed
more than 3.8 billion years ago
 Earth was form 4.6 billion years ago
 The earliest living creatures were
microscopic bacteria

3.  During this time
period the animals
are more evolved
and more diverse
with features such
as hard shells and
they were able to
hunt, burrow and
crawl
 Trilobite fossil
 Some of the earliest
creatures

4.  This period lasted
nearly 43 million years
and known for there
diverse marine
invertebrates which
were mainly trilobites

5.  Earth’s sea levels
raised due to the
melting of glaciers
 Scientist have also
discovered that this
showed the first clear
evidence of life on land
and giant sea
scorpions

6.  This was a important
stage in the evolution on
life because the first
vertebrates were
starting to come out of
the water and we had
the first wingless bugs.
 The two supercontinents
Gondwana and
Euramerica collided then
made one
supercontinent know as
Pangea.

7. Carboniferous had
many swaps that then
over time created coal

8.  A great portion of the marine invertebrates
animals had been extinct
 At that time the only continent that was
separate from the others is what is know Asia

9.  This is the time when the supercontinent
known as Pangea was altering its ocean
circulation and global climate

10. dinosaurs are walking on the land
and they mainly eat the ferns
 The oceans are filled with squid
and ammonites
 There are the first birds too exist

11.  This is the time period when there was the first
fossils of the more recent mammals, certain
groups of birds and some flowering plants.
a fossil
of a bird

12.  The dinosaurs and marine mammals had
been died completely out and instead
rodents appeared

13.  Mountains began to arise
 Since it was so cold certain species died out
 Animals like elephant and apes traveled from
Africa to Eurasia

14.  The supercontinent Pangea had began to
break up
 The mammals were beginning to have fur
coat.

15.  Info on Cambrian
http://www.bbc.co.uk/nature/history_of_the_earth/Cambria
n
 Info on Ordovician
http://www.ucmp.berkeley.edu/ordovician/ordovician.php
 Info on Silurian
http://www.ucmp.berkeley.edu/silurian/silurian.php
 Info on Devonian
http://www.ucmp.berkeley.edu/devonian/devonian.php
 Info on Carboniferous
http://www.ucmp.berkeley.edu/carboniferous/carboniferous
.php
 Info on the Permian
http://www.ucmp.berkeley.edu/permian/permian.php

16.  Precambrian from
http://science.nationalgeographic.com/science/prehistoric-
world/precambrian/
Triassic from
http://www.ucmp.berkeley.edu/mesozoic/triassic/triassic.html
Jurassic from
http://www.ucmp.berkeley.edu/mesozoic/jurassic/jurassic.php
Cretaceous from
http://www.ucmp.berkeley.edu/mesozoic/cretaceous/cretaceous.php
Paleogene from
http://science.nationalgeographic.com/science/prehistoric-world/paleogene/
Neogene from
http://science.nationalgeographic.com/science/prehistoric-
world/neogene/#close-modal
Quaternary from
http://science.nationalgeographic.com/science/prehistoric-world/quaternary/